Chemistry and Physics. 375 



have the formula C 12 H„ 2 O n . Its solution is dextrogyrate 



; 94° 48' referred to the neutral tint, or 88° 51' rehired 



to the yellow light of sodium. On ebullit ion with dilute sulphu- 



nielezitos, ot Herthelot. it . 1 



JiH l l ;'"."• '/v N - xxvii - ^- F;ii - '^7. Lf. a 



vania. (Abstract ot i , ', ' 1 >'S ') 



—The investigation ..f the tri-subst it ution compounds of' benzol 

 ''.-•sonlyot late engaged the attent ion of chemists. The toll,, win,/ 



tion, dot tinmen, IsTo). The fusing 

 22..°-230° C. To effect the introducnon ot the B 

 |he acid obtained by the above chemists was lie; 

 hath with fuming nitric acid. The application 

 1 • : ! 'luces entirely different acids. In the < 

 ;K -]'i was without action upon the bi-hrom acid. 



iniro-acid hy means of tinning nitric acid, aide 



The bi-bromnitro acid was partially pivcipita 

 masses ; the greater quantity of the acid, howe 



?"lved. All of it was obtained by evaporating H 



l»uri i.d b; a'rbonate. 



In hot water tin acid b easily soluble. er_w ; 



Pni',,1,,:.,,. ', „fLe«.d: 



( "<b)..Pb. Obtained bv precipitating a 1 

 potassium salt with lead' acetate. A white 

 __Lead estimation. -.--TV, <rrm. dr> -ah h:im 

 —0-0659 grm.Pb=r 23-95 per cent. L'heon 

 24-21 per cent Pb. 

 Am. Jouk. Sci. -Third Sekiks, Vol. XIII, No. "■ * 



